Ukraine closes airspace to all Russian planes

 Ukraine has banned all Russian planes from using its airspace and exports of Russian gas to Ukraine have been halted by state-controlled giant Gazprom.

Ukraine has banned the airspace, to military planes.
Gazprom and Ukraine  had agreed that Ukraine would pay for its gas in advance.
But   Alexei Miller, president of Gazprom, said  that Ukraine had already used up all the gas it had paid for.
But Mr Yatsenyuk, said Ukraine it had stopped buying from Gazprom because it could get cheaper gas from Europe.
Russia cut off gas to Ukraine in June 2014, But finally ended Rússia  Payed.

In my opinion i think that is a good solution because you can enjoy something without paying it.
In this case, we can not have gas without pay it.

Vocabulary:
statement: http://www.wordreference.com/definition/statement
supply: http://www.wordreference.com/definition/supply

http://www.bbc.com/news/world-europe-34920207