CHRONOLOGY-Georgia and Russia's worsening relations

Aug 11 (Reuters) - Georgian President Mikhail Saakashvili accused Moscow on Monday of trying to overthrow his government as Russian troops pushed into two separatist regions of Georgia.

The issue of South Ossetia's independence has bedevilled Georgia's relations with Russia. Here is a chronology:

April 3, 2008 - NATO member states at a summit in Bucharest agree that Georgia and Ukraine can one day join the alliance. They stop short of giving them a firm timetable for accession.

April 16 - Russian President Vladimir Putin orders officials to establish semi-official ties with separatist administrations in Georgia's Abkhazia and South Ossetia. Georgia says the order is a violation of international law.

April 20 - Georgia says a Russian Mig-29 fighter jet shot down a Georgian drone flying over Abkhazia. Russia denies involvement. A United Nations report will later back Georgian version of events.

April 29 - Russia sends extra troops to Abkhazia to counter what it says are Georgian plans for an attack. The next day NATO accuses Moscow of stoking tensions with Georgia.

May 4 - Separatists in Abkhazia say they shot down two Georgian spy drones over the territory they control. Georgia denies any such flights.

May 6 - Georgia says Russia's deployment of extra troops in Abkhazia has brought the prospect of war "very close".

May 30 - Georgia says it stopped flights by unpiloted spy planes over Abkhazia but reserves the right to resume them.