PARIS (Reuters) European leaders were quick to offer verbal support on Wednesday to US President Barack Obamas Afghanistan strategy, but in less of a hurry to commit new troops to an uncertain and deadly military campaign. Faithful US ally Britain was first off the mark, promising to send 500 extra soldiers even before Obama made his long-awaited policy speech on Tuesday in which he said he would send 30,000 more American troops. US officials have said Washington is seeking 5,000 to 7,000 more troops from allies. Nato Secretary-General Anders Fogh Rasmussen said that alliance members would send at least 5,000 troops to back the new US surge of 30,000 extra soldiers, but key nations made no immediate offer to help. British Prime Minister Gordon Brown said on Wednesday Britain would play its full part in persuading other countries to offer troops to the Afghanistan campaign. But despite the drumbeat from London, the response from continental Europe was cautious as leaders sought to give Obama positive signals while placating their own voters, who are increasingly sceptical of the Afghan war. Germany, the third-biggest contributor with 4,400 troops in Afghanistan, signalled that it stood ready to do more police training but could not commit more troops before a strategy review early next year. (Obama) also took his time to work out the speech and his strategy and we will take our own time to assess what he said and discuss this with our allies, Foreign Minister Guido Westerwelle said. French President Nicolas Sarkozy called Obamas speech courageous, determined and lucid and said France would look at its contribution to international strategy, giving priority to the training of Afghan security forces. Denmark, which has 700 troops in Afghanistan, had a similar reaction. Foreign Minister Per Stig Moller said he would wait until after the Nato meeting to hold discussions with Danish parties supporting the Afghan operation on what to do next. In Rome, Foreign Minister Franco Frattini said Italy would send more troops, but declined to give numbers or a timetable. He promised Italy would do a lot and urged other Europeans to do likewise, presenting their reactions as lukewarm. In Warsaw, Defence Minister Bogdan Klich said Poland was ready to send an extra 600 soldiers to join its 2,000-strong contingent in Afghanistan. That was subject to approval by the president, which was not expected to be a problem. The Czech Defence Ministry said Prague would consider raising the number of its troops by about 100 from the current 535, though the government will face opposition from the anti-war Social Democrats, who have a strong position in parliament. In Ottawa, Canadian Foreign Minister Lawrence Cannon reaffirmed his countrys withdrawal from Afghanistan in 2011, despite the announced surge of US forces there.