Armenia's President Sarksyan visits injured Presidential candidate Hayrikyan at the hospital in Yerevan

Armenia's President Serzh Sarksyan (R) visits injured presidential candidate Paruyr Hayrikyan at the hospital in Yerevan, February 1, 2013. An assassination attempt on a presidential candidate in Armenia has thrown this month's election into doubt and could threaten stability in the volatile Caucasus region that carries oil and natural gas to Europe. REUTERS/PanArmenianPhoto/Tigran Mehrabyan/Handout