Czech Foreign Minister Karel Schwarzenberg (TOP 09) is sending a letter of congratulations to the US leadership on the assassination of al-Qaeda leader Osama bin Laden in Pakistan on 1 May. Prime Minister Petr Nečas has said that the death of the world’s most wanted man sends a clear message that mass murder will not go unpunished.”The death of Osama bin Laden is an important milestone in the war against terror, in the work to create a safer world, even though it is far from meaning its end,” Nečas announced on Monday morning.