Ukraine must double its military budget next year to $3bn (£1.9bn) to fund the fight against pro-Russian rebels, the defence minister has said.
Stepan Poltorak told parliament that this figure included an extra $110m for buying weapons abroad.
The Ukraine crisis began a year ago, when then-President Viktor Yanukovych abandoned an agreement on closer trade ties with EU in favour of closer co-operation with Russia.
This decision sparked pro-EU protests in the capital Kiev, eventually toppling Mr Yanukovych in February.
In the weeks that followed, Russia annexed Crimea, in Ukraine’s south, and pro-Russian separatists took control of Donetsk and Luhansk, declaring independence.
The crisis has caused a serious rift between Russia and Ukraine’s Western supporters.