WASHINGTON, Aug. 16 — The number of roadside bombs planted in Iraq rose in July to the highest monthly total of the war, offering more evidence that the anti-American insurgency has continued to strengthen despite the killing of the terrorist leader Abu Musab al-Zarqawi.

Along with a sharp increase in sectarian attacks, the number of daily strikes against American and Iraqi security forces has doubled since January. The deadliest means of attack, roadside bombs, made up much of that increase. In July, of 2,625 explosive devices, 1,666 exploded and 959 were discovered before they went off. In January, 1,454 bombs exploded or were found.

The bomb statistics — compiled by American military authorities in Baghdad and made available at the request of The New York Times — are part of a growing body of data and intelligence analysis about the violence in Iraq that has produced somber public assessments from military commanders, administration officials and lawmakers on Capitol Hill...http://tinyurl.com/qurgx