Jihadists aligned to Isis have carried out a series of devastating assaults in Egypt?s Sinai province, following earlier attacks elsewhere in the country, making it the most serious escalation of anti-government violence for years. The wave of raids launched on military and police targets left at least 64 civilians and soldiers dead, and signalled a frightening upsurge in militant activity that suggests Isis is growing in power inside the Middle East?s most populous Arab state. Egypt?s military spokesman said that around 70 fighters launched the initial attack at around 10am. By the end of the morning, the jihadists claimed in an statement published online, they had attacked 13 checkpoints,...