Since January 2006, however, violence in the delta has surged.

Over the past month the violence has surged again.

But pre-election violence has surged everywhere and is expected to get worse.

Violence against American forces surged last month to its highest level since the war began last year, with an average of 87 attacks per day.

Blood colored his vision as violence surged through his body for one hard, long second.

Political violence has dropped dramatically since 1983, but has surged in the last year.

Violence surged in other parts of the country.

Politics is at its most contentious, and violence is surging, they argue.

In May 2013, following an abduction of Egyptian officers, the violence surged once again.

Violence surged around the country on Wednesday.