Tony Blair will on Tuesday set the seal on a cross-party coalition to fight terrorism after the three main political parties agreed to rush through new laws by Christmas. The prime minister will host a summit attended by the Conservative and Liberal Democrat leaders, senior Muslims and MPs, to build on the consensus achieved since the London bombings. But although Charles Clarke, home secretary, secured the backing of the opposition parties at a meeting on Monday, the government faces a battle to convince some members of the House of Lords of the merits of its counter-terrorism legislation. Liberal Democrat peers who led opposition to the government's anti-terror laws before the election warned that plans to create a new offence of âglorifyingâ terrorism should be approached with care and could fall foul of European law.Lord Goodhart said: âIf legislation goes beyond what can be regarded as being necessary in a democratic society it would fall foul of article 10 of the European Convention [on human rights].â Article 10 relates to freedom of expression. He added there could be legal difficulties in securing convictions under the proposed legislation. British police and security chiefs are expected to press the government for increased resources when they meet Mr Blair on Thursday. Number 10 is expected to reassure those in charge of the investigation that they can count on sufficient funding to boost manpower, training and technology. The counter-terrorism bill will be put before parliament in October.