Czech Republic's President Vaclav Klaus waits to welcome European Parliament President Jerzy Buzek (not pictured) at Prague Castle in Prague in this October 9, 2009 file photo. The Czech Constitutional Court threw out a complaint against the EU's Lisbon Treaty on Tuesday, removing the last obstacle to its ratification. The ruling allows euroskeptic President Vaclav Klaus to sign the treaty, which will give the EU its first long-term president and streamline decision-making in the bloc of 27 states and nearly half a billion people. REUTERS/David W Cerny