fix: edits to volume names per editorial request

@joewiz new clinton titles for the site.

bibliography/frus1993-00v18.xml

@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <volume id="frus1993-00v18">
-    <title type="complete">Foreign Relations of the United States, 1993–2000, Volume XVIII, Russia,
-        1993–1996</title>
+    <title type="complete">Foreign Relations of the United States, 1993–2000, Volume XVIII, Russia:
+        High-Level Contacts</title>
     <title type="series">Foreign Relations of the United States</title>
     <title n="1993-00" type="sub-series">1993–2000</title>
-    <title type="volume">Russia, 1993–1996</title>
+    <title type="volume">Russia: High-Level Contacts</title>
     <title type="volume-number">Volume XVIII</title>
     <editor role="primary"/>
     <editor role="general"/>

bibliography/frus1993-00v19.xml

@@ -1,10 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <volume id="frus1993-00v19">
-    <title type="complete">Foreign Relations of the United States, 1993–2000, Volume XIX, Russia,
-        1997–2000</title>
+    <title type="complete">Foreign Relations of the United States, 1993–2000, Volume XIX, Russia: Policy</title>
     <title type="series">Foreign Relations of the United States</title>
     <title n="1993-00" type="sub-series">1993–2000</title>
-    <title type="volume">Russia, 1997–2000</title>
+    <title type="volume">Russia: Policy</title>
     <title type="volume-number">Volume XIX</title>
     <editor role="primary"/>
     <editor role="general"/>

bibliography/frus1993-00v21.xml

@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <volume id="frus1993-00v21">
     <title type="complete">Foreign Relations of the United States, 1993–2000, Volume XXI, Ukraine;
-        Newly Independent States</title>
+        Belarus; Moldova; Transcaucasus; Central Asia</title>
     <title type="series">Foreign Relations of the United States</title>
     <title n="1993-00" type="sub-series">1993–2000</title>
-    <title type="volume">Ukraine; Newly Independent States</title>
+    <title type="volume">Ukraine; Belarus; Moldova; Transcaucasus; Central Asia</title>
     <title type="volume-number">Volume XXI</title>
     <editor role="primary"/>
     <editor role="general"/>

bibliography/frus1993-00v23.xml

@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <volume id="frus1993-00v23">
-    <title type="complete">Foreign Relations of the United States, 1993–2000, Volume XXIII, Western
-        Europe</title>
+    <title type="complete">Foreign Relations of the United States, 1993–2000, Volume XXIII, Europe:
+        High-Level Contacts</title>
     <title type="series">Foreign Relations of the United States</title>
     <title n="1993-00" type="sub-series">1993–2000</title>
-    <title type="volume">Western Europe</title>
+    <title type="volume">Europe: High-Level Contacts</title>
     <title type="volume-number">Volume XXIII</title>
     <editor role="primary"/>
     <editor role="general"/>

bibliography/frus1993-00v24.xml

@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <volume id="frus1993-00v24">
-    <title type="complete">Foreign Relations of the United States, 1993–2000, Volume XXIV, Western
-        Europe: European Union</title>
+    <title type="complete">Foreign Relations of the United States, 1993–2000, Volume XXIV, Europe:
+        Policy, 1993-1996</title>
     <title type="series">Foreign Relations of the United States</title>
     <title n="1993-00" type="sub-series">1993–2000</title>
-    <title type="volume">Western Europe: European Union</title>
+    <title type="volume">Europe: Policy, 1993-1996</title>
     <title type="volume-number">Volume XXIV</title>
     <editor role="primary"/>
     <editor role="general"/>

bibliography/frus1993-00v25.xml

@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <volume id="frus1993-00v25">
-    <title type="complete">Foreign Relations of the United States, 1993–2000, Volume XXV, Western
-        Europe: Europe Region</title>
+    <title type="complete">Foreign Relations of the United States, 1993–2000, Volume XXV, Europe:
+        Policy, 1997-2000</title>
     <title type="series">Foreign Relations of the United States</title>
     <title n="1993-00" type="sub-series">1993–2000</title>
-    <title type="volume">Western Europe: Europe Region</title>
+    <title type="volume">Europe: Policy, 1997-2000</title>
     <title type="volume-number">Volume XXV</title>
     <editor role="primary"/>
     <editor role="general"/>