diff --git a/frontend/src/GraphView.jsx b/frontend/src/GraphView.jsx
index fd07c19..1d826de 100644
--- a/frontend/src/GraphView.jsx
+++ b/frontend/src/GraphView.jsx
@@ -3,6 +3,10 @@ import * as d3 from 'd3';
 import { IconZoomIn, IconZoomOut, IconMaximize, IconMinimize } from '@tabler/icons-react';
 
 function GraphView({ servers, connections }) {
+  // Debug helper (enable/disable via window.GRAPH_DEBUG = true/false in console)
+  const isDebug = typeof window !== 'undefined' ? (window.GRAPH_DEBUG !== false) : true;
+  const dbg = (...args) => { if (isDebug && typeof console !== 'undefined') console.log('[GraphView]', ...args); };
+
   const [nodePositions, setNodePositions] = useState({});
   const [draggedNode, setDraggedNode] = useState(null);
   const [dragOffset, setDragOffset] = useState({ x: 0, y: 0 });
@@ -80,16 +84,34 @@ function GraphView({ servers, connections }) {
         .translateExtent([[-10000, -10000], [10000, 10000]])
         .on('zoom', (event) => {
           g.attr('transform', event.transform);
+          // dbg('onZoom', { k: event.transform.k, x: event.transform.x, y: event.transform.y });
         });
     svg.call(zoomRef.current);
+    dbg('zoom initialized', { width, height });
   }, []);
 
   // Контролы масштабирования
   const zoomBy = (factor) => {
     if (!zoomRef.current || !svgRef.current) return;
-    const svg = d3.select(svgRef.current);
-    // Используем встроенную математику d3.zoom с учётом extent
-    svg.transition().duration(220).call(zoomRef.current.scaleBy, factor);
+    const svgEl = svgRef.current;
+    const current = d3.zoomTransform(svgEl);
+    const cx = svgEl.clientWidth / 2;
+    const cy = svgEl.clientHeight / 2;
+    dbg('zoomBy click', { factor, current: { k: current.k, x: current.x, y: current.y }, center: { cx, cy } });
+    const next = d3.zoomIdentity
+      .translate(current.x, current.y)
+      .scale(current.k)
+      .translate(cx, cy)
+      .scale(factor)
+      .translate(-cx, -cy);
+    d3.select(svgEl)
+      .transition()
+      .duration(220)
+      .call(zoomRef.current.transform, next)
+      .on('end', () => {
+        const nt = d3.zoomTransform(svgEl);
+        dbg('zoomBy end', { next: { k: nt.k, x: nt.x, y: nt.y } });
+      });
   };
 
   const fitToView = () => {
@@ -127,6 +149,7 @@ function GraphView({ servers, connections }) {
   const toggleFullscreen = () => {
     const el = containerRef.current;
     if (!el) return;
+    dbg('toggleFullscreen', { isFullscreen: Boolean(document.fullscreenElement) });
     if (!document.fullscreenElement) {
       el.requestFullscreen?.();
     } else {
@@ -236,11 +259,13 @@ function GraphView({ servers, connections }) {
     return map[tunnelType] || { color: '#667382', dash: '5,5', width: 2 };
   };
 
-  // Флаг страны по ISO-2 (emoji). Для не-ISO-2 вернём код как есть
-  const getFlagEmoji = (countryCode) => {
-    if (!countryCode) return '';
-    const cc = String(countryCode).trim().toUpperCase();
-    if (cc.length !== 2) return cc; // например, SWE
+  // Флаг страны по ISO-2 с поддержкой нестандартных кодов из списка (SWE->SE)
+  const getFlagEmoji = (code) => {
+    if (!code) return '';
+    const map = { SWE: 'SE', UK: 'GB' };
+    const ccRaw = String(code).trim().toUpperCase();
+    const cc = (map[ccRaw] || ccRaw).slice(0, 2);
+    if (cc.length !== 2) return ccRaw;
     return cc.replace(/./g, (ch) => String.fromCodePoint(127397 + ch.charCodeAt()));
   };
 
@@ -429,21 +454,29 @@ function GraphView({ servers, connections }) {
                       y={badgeY}
                       rx={8}
                       ry={8}
-                      width={36}
-                      height={18}
+                      width={52}
+                      height={20}
                       fill="#fff"
                       stroke={countryColor}
                     />
                     <text
-                      x={badgeX + 18}
-                      y={badgeY + 12}
-                      textAnchor="middle"
+                      x={badgeX + 10}
+                      y={badgeY + 13}
                       fontSize="14"
                       dominantBaseline="middle"
                       style={{ fontFamily: 'Segoe UI Emoji, Noto Color Emoji, Apple Color Emoji, "Twemoji Mozilla", "EmojiOne Color", sans-serif' }}
                     >
                       {flag}
                     </text>
+                    <text
+                      x={badgeX + 28}
+                      y={badgeY + 13}
+                      fontSize="11"
+                      fill="#475569"
+                      dominantBaseline="middle"
+                    >
+                      {String(server.country).toUpperCase().slice(0,3)}
+                    </text>
                   </g>
                 );
               })()}