Japanese Mongolia

The Republic of Mongolia, commonly called Mongolia or Japanese Mongolia, is a puppet state of the Empire of Japan.

History
On June 22, 1941, Nazi Germany initiated Operation Barbarossa, and invaded the Soviet Union. With 3 million troops, Hitler launched the largest ground invasion in history. Germany made staggering progress, with huge encirclement movements capturing huge numbers of Soviet troops.

Eventually, the Germans were outside Moscow, the Russian capital. The Russian Winter then came, and the Germans were stalled in sieging Moscow. Nazi Germany then sent a request to the Empire of Japan to become allies and invade the Soviet Union. Japan accepted, and got ready to launch an attack on the Soviet Union. They did not declare war on the rest of the Allies, however.

On November 16, the Empire of Japan declared war on the Soviet Union. The Russians were now facing a two-front war, and had to bring troops to the Russian Far East, thus taking away troops from the western front and defending Moscow.

The Japanese quickly took over the northern half of Sakhalin through South Sakhalin, and also invaded Kamchatka through the Kuril Islands. Japan invaded Outer Manchuria through its puppet of Manchukuo and Sakhalin, and captured Vladivostok.

The Japanese then declared war on Mongolia to get to Russia, and invaded them along the border with Japanese China and Mengjiang. Japan swept through Mongolia, and captured Ulaanbaatar. Mongolia surrendered, and was annexed to the Japanese puppet of Mengjiang, which was renamed to the Republic of Mongolia. The Japanese then launched another invasion of the Soviet Union through Japanese Mongolia. They gave Tannu Tuva an ultimatum to join Japanese Mongolia, which they accepted.

Allies

 * Empire of Japan - Thank you for taking out that monster China.
 * Japanese Yakutia
 * Manchukuo
 * Japanese Far East

Enemies

 * Japanese China - Look who got destroyed!