Ukraine is a country located in Eastern Europe.
Kievan Rus' (900-1100 CE)
Kievan Rus' is founded since 966 CE (?), and was collapsed into countries in the 12th century, then the Mongolian invasion by Genghis Khan attacked Kievan Rus' later then beyond until it reaches Poland and Hungary where Mongolian Empire collapsed. Later becomes part of Poland-Lithuanian Commonwealth.
Poland-Lithuanian Rule (1300-1600 CE)
Since the rise of Poland-Lithuania, it had been conquered by them, including some of Ukraine. Russia controls the rest after the Ottomans abandoned the Crimean area. Soon, the Partition of Poland, Russia has Ukraine.
Independence (1917-1925 CE)
Ukraine was established in 1918. The Ukrainian forces have tried to make the creation of Ukraine in 1917 but it was successful. Some Bolshevik forces are trying to make Ukraine under the Soviet rule but they occupied the Eastern modern Ukraine. It ended at 1921.
World War II (1938-1944 CE)
During WWII, the Nazi Germany occupies some of Ukraine, including Romania occupying some of Ukraine's south. Then got destroyed and becomes part of USSR. When the last leader of USSR resigned, Ukraine becomes a country.
Euromaidan and Russia (2013-2014 CE)
The Euromaidan has been risen by small amount of people some think that it was funded by America, soon to become a mass of protests. When it happened, Crimea declared their independence, an independence referrum has happened in Crimea. With the Russians won, it became part of Russia, but some think it's illegal. Donetsk becomes People's Republic of Donetsk as pro-Russians declared independence.
Ukraine splits into east and west Ukraine while the east Ukraine's states form a confederation to join Russia. It is somewhat unlikely that they will get rejected.
I think Ukraine would become a large war later on, with USA and allies on the Ukrainian side while Russia and its allies side with the Russian side.
Putin splits Ukraine in two separate countries: Ukraine in north and Nova Russia in the south. Nova Russia joins Russia.
Parts of eastern and southern Ukraine split from Ukraine and join Russia after few weeks. (Likely)
War between Russia and Ukraine starts and Ukraine gets small help from NATO. (Unlikely)
Great war with NATO and Ukraine aganist Russia breaks out. (Unlikely)
Countries around Ukraine demand their claims and she is forced to give them. (Very Unlikely)
1. Ukraine is forced to give up their eastern territory along with Odessa to Russia without a war. The rest stays as Ukraine (likely)
2. Ukraine is forced to give up their eastern territory along with Odessa to Russia without a war. The rest splits into 2: the western part in Galicia becomes a polish puppet. Ukraine also gives some land to Slovakia and the rest remains Ukraine (unlikely)
Ukraine will get his old ethnical lands, because Ukraine is home country of It's excellent
With the cut of supplies to the rebels region, the people from the region join the rebels or move to other regions. Russia recognizes New Russia. They get "independence", but happens a war like Vietnam War, with Russia and its allies siding the unrecognized New Russia and NATO siding Ukraine. Ukraine wins and joins EU
Ukraine dies because its annexed by Russia.
Ukraine gets annexed by USSR
Russia is annexed by Ukraine
Ukraine Merges with Belarus to create
the most glorious nation of Mapperdonian history Belaruk.
Ukraine gets defeated by Russia and a puppet state called (Ucraijna) has been formed,with Ukraine becoming Democratic Republic of Ukraine.