War in Syria Stoking Violence in Iraq

Worst violence in Iraq for five years

BAGHDAD — A recent tide of sectarian tensions that erupted into the worst violence seen in Iraq in five years is testing the government of Prime Minister Nouri al-Maliki, whose ability to contain the crisis could hinge on a conflict raging beyond his control in Syria.

The prospect of a regional power shift driven by the bloody civil war next door, where a mostly Sunni rebel movement is struggling to topple the Shiite-dominated regime, has emboldened Iraq's Sunni minority to challenge its own Shiite government and amplified fears within Maliki's administration that Iraq may soon be swept up in a spillover war.