Niger holds tense vote, with Issoufou running for second term

By Abdoulaye Massalaki NIAMEY (Reuters) - Niger closed its land borders and ramped up security on Sunday for an election in which President Mahamadou Issoufou is running for a second term promising to crush Islamist militants and reduce the country's deep poverty. Security forces patrolled cities and villages in case of unrest or militant attacks.