(Al Jazeera English News Headlines: June 29, 2010) Eleven members of an alleged Russian spy ring in the U.S. have been arrested. Russia’s Foreign Ministry calls the accusations "baseless". Another general strike in Greece against austerity measures continues to disrupt Greece's critical tourism industry. The new commander of international forces in Afghanistan, Gen. David Petraeus, says that the security situation there is "tenuous". The U.S. Supreme Court has ruled that citizens throughout the country have the right to own a gun, and individual cities and states cannot enact laws banning firearms.