Washington and Tehran engaged in a war of words ahead of crucial talks in Oman, with President Trump stating military action against Iran is “absolutely” an option if negotiations fail. Iranian official Rear Admiral Ali Shamkhani warned of potential expulsion of UN inspectors and the transfer of enriched materials to secure locations in response to external threats. As talks are set to take place, the US has imposed new sanctions on Iran’s nuclear program and oil network, while hoping for a peaceful resolution to Western concerns about Iran’s nuclear ambitions.