On May 10th 2005, a Georgian terrorist named Vladimir Arutyunian attempted to assassinate the president of the United States, George W. Bush, along with the Georgian President Mikheil Saakashvili with a grenade.
Arutyunian waited for hours in the square that the presidents would later speak at muttering to himself in a heavy leather coat. When the speeches began, Arutyunian pulled the pin on a Soviet-made RGD-5 grenade and threw it toward the crowd. Luckily the grenade was wrapped in a silk handkerchief, which for some reason prohibited it from detonating.
Arutyunian escaped, but was later apprehended. When intelligence agents discovered him, a gun battle ensued in which an officer was fatally shot. Artuyunian was captured and sentenced to life in prison in Georgia and should he ever be released, he will be immediately extradited to serve time in the United States. He can currently only be released by a presidential pardon.