ISLAMABAD  - Gunmen kidnapped seven soldiers from a bus near Rawalpindi on Wednesday, military officials said, just days after Taliban forces executed 21 pro-government paramilitaries they had seized.The gunmen took the seven soldiers and let go a sweeper on the bus with them, one military official said. The gunmen were wearing military uniforms, other sources said.The men were travelling between army headquarters in Rawalpindi and their stations in Khyber Pakhtunkhwa when they were taken off their bus in Jand in Punjab. Taliban commander Tariq Afridi, who has forces in the area, was not available for comment and no Taliban spokesman returned calls seeking comment.Last week the Taliban kidnapped 23 paramilitary pro-government forces. Twenty-one of their bodies, bound, blindfolded and shot in the head, were discovered on Sunday. One man escaped and another was badly wounded. A military offensive over the past two years has clawed back swathes of Pakistan from the Taliban. But the insurgents are still able to organise kidnaps and killings over wide swathes of the country and high-profile attacks have increased over the past month. Elections are scheduled for the spring and the insurgency will be a key issue.