A new consulting firm report emphasizes the growing costs and problems of sustaining advanced aircraft.

DZYNE Technologies has set a new endurance benchmark for high-altitude unmanned aircraft after its

US President Donald Trump renewed threats to strike Iran if it does not agree to negotiate a new nuclear deal, as US forces conduct a multi-day air exercise in the Middle East, bolstering Washington’s military presence in the region.

U.S. naval and air forces are moving toward the Middle East as tensions with Iran rise, highlighting deterrence efforts, escalation risks, and what the buildup means for servicemembers operating in the region.

The U.S. military has bolstered its presence across the Middle East amid escalating tensions with Iran, as nuclear talks were thrown into uncertainty Wednesday before being moved to Oman. U.S. and Iranian officials had been expected to meet Friday in Istanbul, with several Middle Eastern countries participating as observers.

Iran wanted the meeting to take place in Oman as a continuation of previous rounds of talks held in the Gulf Arab country on its nuclear programme, asking ‍for a change of location from Turkey to avoid ​any expansion of the discussions to issues such as Tehran's ballistic missiles,

Iran and the US said Wednesday they were going ahead with nuclear talks in Oman later this week, even as Trump piled pressure on Tehran's supreme leader.