Pakistan opens border crossing with Afghanistan amid rising tensions

By Jibran AhmedPESHAWAR, Pakistan (Reuters) - Pakistan said on Monday it would open border crossings for two days to allow through Afghans with valid visas after Islamabad shut the frontier because it said militants accused of a series of attacks were being sheltered in the neighboring country.Relations between the countries are tense, and each routinely accuses the other of doing too little to prevent Taliban fighters and other militants from operating in its territory.Pakistan has blamed the a