Associated Press DUBAI, United Arab Emirates (AP) — Iran will begin enriching uranium up to 60% purity after an attack on its Natanz nuclear facility, a negotiator said Tuesday, pushing its program to higher levels than ever before though still remaining short of weapons-grade. The announcement marks a significant escalation after the sabotage that damaged centrifuges, suspected of having been carried out by Israel — and could inspire a further response from Israel amid a long-running shadow war between the nations. Israeli Prime Minister Benjamin Netanyahu has vowed never to allow Tehran...