Warsaw - Poland's Constitutional Tribunal was to settle a spat Friday on who represents the country at European Union summits, after a jostle for power among Polish leaders that forced one in October to charter his own plane.

Prime Minister Donald Tusk asked the tribunal to resolve the conflict that's part of a larger, years-long power struggle between the two political rivals.

The tribunal will decide if President Lech Kaczynski can decide for himself to take part in EU summits, or if the prime minister has the final word.

The spat reached boiling point on October, when Tusk flew to Brussels and later declined a request for the plane from Kaczynski. Hours before the summit, Kaczynski chartered his own flight.

Poland, like most countries, has generally sent its prime minister to EU summits, while the president heads the Polish delegation at NATO summits.

Most recently, the two leaders put the spat behind them and pledged more cooperation as the world financial crisis reached Poland to cause budget cuts, lay-offs and a weakening currency. (dpa)