After intense pressure from the U.S. and India, authorities in Pakistan yesterday said they arrested the founder of the Jaish-e-Mohammed organization, a militant Islamic group that Indian officials blame for a recent attack on the Indian Parliament building. The detention of Masood Azhar is the most significant step taken by Pakistan’s military government to clamp down on those accused of staging the attacks to end Indian rule in Kashmir. Indian and Western intelligence agencies say Azhar has close links with the Taliban, as well as Pakistan’s intelligence service.