FACTBOX-Ukraine-Russia relations

(Updates with gas deal/NATO)

Feb 12 (Reuters) - Russian and Ukrainian leaders settled a gas debt row at last-ditch talks in the Kremlin on Tuesday, just minutes before a Moscow-imposed deadline on Ukraine to pay up or face supply cuts.

Russia, which has a record of gas rows with Kiev, is not keen to alienate its neighbour, torn between integrating with Europe and keeping traditionally close ties with Russia.

Here are details of some issues which have affected Russian-Ukrainian relations:

* GAS:

-- Russian gas monopoly Gazprom says Ukraine owes it $1.5 billion in payment arrears for earlier supplies. Russia and Ukraine agreed on Tuesday that Ukraine would on Thursday start repaying the debt.

-- Ukraine's Prime Minister Yulia Tymoshenko, who clashed with Russia over gas during her earlier stint in office, has blamed Russian-imposed gas traders for racking up the debt.

-- In 2006 a new pricing deal was clinched after Russia, supplier of a quarter of Europe's gas, briefly cut flows to its southern neighbour. The rest of Europe, reliant on Ukraine's pipelines for most of its Russian gas, also shivered.