The president of Ukraine has eliminated the Ukrainian parliament (the group of people who make the laws in Ukraine). Indeed, he even stated that he has 'dissolved' (removed, eliminated) the Ukrainian parliament because there are members of the parliament who support those in eastern Ukraine who do not want to be a country that is controlled by the government in Kiev, Ukraine.
These are clearly the actions of a dictator - a single person who controls all aspects of a government. Because there are people in the parliament who disagree with him, he has thrown them out and they will be replaced by people who agree with the new dictator of Ukraine - Petro Poroshenko.
The current government of Ukraine was established by violent protests that overthrew an elected president and now Poroshenko is openly taking the actions of a dictator. It is a disgrace that the US government supports this kind of nonsense.
Here is an article about the latest illegal and anti-democratic actions in Ukraine:
Vocabulary from the article:
to dissolve s/t - if you dissolve something you usually drop it into water and it slowly disappears. In this case, to dissolve a parliament means to eliminate it, get rid of it, remove it.
an insurgency - this is a group of people who reject the government of their area and fight for their freedom from it
snap elections - I am assuming 'snap' elections mean 'quick' elections. In this case they probably also mean 'dishonest' elections
to prefigure - if something prefigures something else, it comes before something else
coalition - group
militants-separatists - these are the people who do not want to live under the Ukrainian government in Kiev
rebels - those who fight against what they feel is wrong
a convoy - a group of trucks or other vehicles
stalling tactics - a strategy to delay something from happening
shelling - when an army shoots large explosive devices into a city to destroy buildings and kill people