Game Changers: Foreign Policy Events that Altered Presidencies

Nov. 7, 2011, 1 a.m.

Every pres­id­ent enters the White House with an agenda, one that he has pitched to cit­izenry throughout his en­tire cam­paign. However, when a sur­prise for­eign-policy or na­tion­al-se­cur­ity is­sue ex­plodes onto the scene, the lead­er of the Free World can find them­selves re­de­fin­ing their term and their policies based on their re­sponse. We take a look in pic­tures at the events that have shaped the mod­ern pres­id­ents.