UPDATE 2-Ukrainian strikes kill four in Crimea, Russian officials say

* Officials in Crimea say Ukraine attacked two main centres * Russia has pledged systematic attacks on Kyiv * Industrial facility in Kyiv suburb of Boryspil on fire (Updates death toll in paragraph 1,

(The article has been published through a syndicated feed. Except for the headline, the content has been published verbatim. Liability lies with original publisher.)