diff --git a/web-ui/src/app/cases/[caseNumber]/compose/page.tsx b/web-ui/src/app/cases/[caseNumber]/compose/page.tsx
index aed02e5..6d7dbbd 100644
--- a/web-ui/src/app/cases/[caseNumber]/compose/page.tsx
+++ b/web-ui/src/app/cases/[caseNumber]/compose/page.tsx
@@ -1,6 +1,6 @@
 "use client";
 
-import { use } from "react";
+import { use, useRef, useState } from "react";
 import Link from "next/link";
 import { AppShell } from "@/components/app-shell";
 import { Card, CardContent } from "@/components/ui/card";
@@ -25,6 +25,91 @@ function ProseSection({ title, content }: { title: string; content?: string }) {
   );
 }
 
+function AnalysisActions({
+  caseNumber,
+  hasAnalysis,
+  onUploaded,
+}: {
+  caseNumber: string;
+  hasAnalysis: boolean;
+  onUploaded: () => void;
+}) {
+  const fileRef = useRef<HTMLInputElement>(null);
+  const [uploading, setUploading] = useState(false);
+  const [uploadMsg, setUploadMsg] = useState<{ ok: boolean; text: string } | null>(null);
+
+  async function handleUpload(file: File) {
+    setUploading(true);
+    setUploadMsg(null);
+    try {
+      const form = new FormData();
+      form.append("file", file);
+      const res = await fetch(`/api/cases/${caseNumber}/research/analysis/upload`, {
+        method: "PUT",
+        body: form,
+      });
+      const data = await res.json();
+      if (!res.ok) {
+        setUploadMsg({ ok: false, text: data.detail || "שגיאה בהעלאה" });
+        return;
+      }
+      setUploadMsg({
+        ok: true,
+        text: `הקובץ הועלה בהצלחה — ${data.sections.threshold_claims} טענות סף, ${data.sections.issues} סוגיות`,
+      });
+      onUploaded();
+    } catch {
+      setUploadMsg({ ok: false, text: "שגיאת רשת" });
+    } finally {
+      setUploading(false);
+      if (fileRef.current) fileRef.current.value = "";
+    }
+  }
+
+  return (
+    <div className="flex items-center gap-2 flex-wrap">
+      {uploadMsg && (
+        <span className={`text-xs ${uploadMsg.ok ? "text-green-700" : "text-red-600"}`}>
+          {uploadMsg.text}
+        </span>
+      )}
+      <input
+        ref={fileRef}
+        type="file"
+        accept=".md"
+        className="hidden"
+        onChange={(e) => {
+          const f = e.target.files?.[0];
+          if (f) handleUpload(f);
+        }}
+      />
+      <Button
+        variant="outline"
+        disabled={uploading}
+        onClick={() => fileRef.current?.click()}
+      >
+        {uploading ? "מעלה..." : "העלה ניתוח מעודכן"}
+      </Button>
+      {hasAnalysis && (
+        <Button
+          variant="outline"
+          onClick={() => {
+            const a = document.createElement("a");
+            a.href = `/api/cases/${caseNumber}/research/analysis/download`;
+            a.download = `analysis-${caseNumber}.md`;
+            a.click();
+          }}
+        >
+          הורד ניתוח
+        </Button>
+      )}
+      <Button asChild variant="outline">
+        <Link href={`/cases/${caseNumber}`}>חזרה לתיק</Link>
+      </Button>
+    </div>
+  );
+}
+
 export default function ComposePage({
   params,
 }: {
@@ -78,24 +163,7 @@ export default function ComposePage({
               </p>
             )}
           </div>
-          <div className="flex items-center gap-2">
-            {analysis.data && (
-              <Button
-                variant="outline"
-                onClick={() => {
-                  const a = document.createElement("a");
-                  a.href = `/api/cases/${caseNumber}/research/analysis/download`;
-                  a.download = `analysis-${caseNumber}.md`;
-                  a.click();
-                }}
-              >
-                הורד ניתוח
-              </Button>
-            )}
-            <Button asChild variant="outline">
-              <Link href={`/cases/${caseNumber}`}>חזרה לתיק</Link>
-            </Button>
-          </div>
+          <AnalysisActions caseNumber={caseNumber} hasAnalysis={!!analysis.data} onUploaded={() => analysis.refetch()} />
         </div>
 
         <div className="h-[2px] bg-gradient-to-l from-transparent via-gold to-transparent" />
diff --git a/web/app.py b/web/app.py
index fd2bfd1..9cafc60 100644
--- a/web/app.py
+++ b/web/app.py
@@ -1633,6 +1633,91 @@ async def api_research_analysis_download(case_number: str):
     )
 
 
+@app.put("/api/cases/{case_number}/research/analysis/upload")
+async def api_research_analysis_upload(
+    case_number: str,
+    file: UploadFile = File(...),
+):
+    """Upload an updated analysis-and-research.md file.
+
+    Validates that:
+    1. The file is markdown (text)
+    2. It can be parsed by the research_md parser
+    3. It contains at least one structural section (issues or threshold_claims)
+    4. The case number in the file matches the URL
+
+    On success, backs up the existing file and replaces it.
+    """
+    if not file.filename or not file.filename.endswith(".md"):
+        raise HTTPException(400, "הקובץ חייב להיות בפורמט Markdown (.md)")
+
+    content = await file.read()
+    if len(content) > 5 * 1024 * 1024:
+        raise HTTPException(400, "הקובץ גדול מדי — מקסימום 5MB")
+
+    try:
+        text = content.decode("utf-8")
+    except UnicodeDecodeError:
+        raise HTTPException(400, "הקובץ חייב להיות בקידוד UTF-8")
+
+    if len(text.strip()) < 100:
+        raise HTTPException(400, "הקובץ ריק מדי — נראה שחסר תוכן")
+
+    # Write to a temp file so parse() can work on it
+    dest = _research_file_path(case_number)
+    tmp = dest.with_suffix(".md.upload-tmp")
+    try:
+        dest.parent.mkdir(parents=True, exist_ok=True)
+        tmp.write_text(text, encoding="utf-8")
+        parsed = research_md.parse(tmp)
+    except Exception as e:
+        tmp.unlink(missing_ok=True)
+        raise HTTPException(
+            400,
+            f"שגיאה בפרסור הקובץ — המבנה לא תקין: {e}",
+        )
+
+    # Validate structure
+    issues = parsed.get("issues", [])
+    thresholds = parsed.get("threshold_claims", [])
+    if not issues and not thresholds:
+        tmp.unlink(missing_ok=True)
+        raise HTTPException(
+            400,
+            "הקובץ חייב להכיל לפחות סעיף אחד של טענות סף או סוגיות להכרעה",
+        )
+
+    # Validate case number matches
+    file_case = parsed.get("header", {}).get("case_number", "")
+    if file_case and file_case != case_number:
+        tmp.unlink(missing_ok=True)
+        raise HTTPException(
+            400,
+            f"מספר התיק בקובץ ({file_case}) לא תואם לתיק הנוכחי ({case_number})",
+        )
+
+    # Backup existing file
+    if dest.exists():
+        backup_dir = dest.parent / "backup"
+        backup_dir.mkdir(exist_ok=True)
+        ts = time.strftime("%Y%m%d-%H%M%S")
+        backup_path = backup_dir / f"analysis-and-research-{ts}.md"
+        shutil.copy2(dest, backup_path)
+
+    # Replace with uploaded file
+    tmp.replace(dest)
+
+    return {
+        "status": "ok",
+        "sections": {
+            "threshold_claims": len(thresholds),
+            "issues": len(issues),
+            "has_conclusions": bool(parsed.get("conclusions", "").strip()),
+        },
+        "file_size": len(content),
+    }
+
+
 class ChairPositionRequest(BaseModel):
     section_id: str
     position: str = ""