The administration of U.S. President Joe Biden is preparing an operation in response to a recent attack by militants on an American base in Jordan, as a result of which three servicemen were killed. Such a campaign can last several weeks, reports NBC News. According to US officials in a conversation with journalists, Washington is planning retaliatory attacks – a “campaign” against Iran-backed militants that could last “weeks.” Targets are expected to include Iranian facilities outside the country, and the campaign will include both strikes and cyber operations. It is also noted that Biden has…