The move appeared to be a response to a criminal case launched on Monday by Russia against Ukraine's senior political and military leadership. The two legal investigations will further ratchet up tensions between the two.
President Petro Poroshenko attends memorial to Jews who died at site of one of worst mass killings during the Holocaust.
The firebombing at the Great Choral Synagogue on September 24, the eve of Rosh Hashanah, reportedly did not cause damage.
The annual pilgrimage of 25,000 Jews is the first since the ouster of Viktor Yanukovych's government in February, in a revolution that started over his alleged corruption and perceived allegiance to Russia.
New peace agreement signed Saturday requires both sides to remove heavy artillery from the front line.
Yair Shamir cites boycott of produce from West Bank settlements as one of the key reasons he will withstand European pressure.
Alexander Vitko, an Israeli citizen, was one of 38 Donetsk People's Republic fighters exchanged for 35 Ukrainian soldiers on Saturday, report says.
The Jews of the two nations have wildly different views on the benefits of independence, but history suggests they should both have reasons to fear nationalism.
In a speech to legislators, President Petro Poroshenko called the vote a 'first but very decisive step' toward bringing Ukraine fully into the European Union.
Kiev was eyeing equipment that it could use against the Moscow-backed separatists, according to Channel 2.