The last hurdles for the Lisbon treaty - and to Tony Blair's chance of becoming Europe's first president - seemed to fall away yesterday when the Poles pledged to sign and the Czech President warned David Cameron that it was "too late" for him to stop the document taking effect. Vaclav Klaus signalled that he would pass the treaty once it had been reassessed by the Czech Constitutional Court, a process which could take some weeks but is unlikely to last until May or June, when Mr Cameron hopes to take power and then hold a referendum. With the Polish President, Lech Kaczynski, also saying yesterday that he would ratify following the emphatic approval of the treaty by Ireland in its re-run...