Prague - Czech Prime Minister Mirek Topolanek has cancelled next week's four-day US trip, including a White House visit with President George W Bush, to focus on domestic politics, his spokeswoman said Friday.

Topolanek, one of the most pro-US leaders in Eastern Europe, is fighting for his political survival after his senior ruling Civic Democrats were trounced in a regional election last week.

The premier decided to stay in Prague between October 29 and November 1 to both deal with domestic political troubles and back Czech-US missile defence treaties that parliament could take up next week, his spokeswoman Jana Bartosova said.

As part of the cancelled trip, Topolanek planned Wednesday to meet the outgoing president in the Oval Office, where they planned to discuss the global financial crisis and US plans to place missile- defence-shield bases in Europe.

Topolanek's cabinet agreed to place a radar base for the system on Czech soil, a matter of two bilateral treaties that now require parliamentary approval.

The premier so far lacks a clear majority for the project in parliament's lower house. (dpa)