In regard to U.S. plans of hosting missile defense shield bases in the country, Tusk hinted skepticism toward the project, saying that their presence could potentially increase security risks from Russia, and rejected U.S. offers in early July 2008. By August, however, Tusk relented, and supported the missile shield, declaring: "We have achieved the main goal. It means our countries, Poland and the United States will be more secure." Following President Barack Obama's decision to scrap and revise missile defense strategy, Tusk described the move as "a chance to strengthen Polish-US co-operation in defense..." He said: "I took this declaration from President Obama very seriously and with great satisfaction."