NEW DELHI, Sept 12 (Reuters) - The BRICS group of nations unanimously adopted a ‌joint declaration on Saturday, expressing "deep concern" over the war ‌in the Middle East and urged maximum restraint, advocating for a "multilateral ​approach" that respects national viewpoints.

The declaration, adopted on the first day of the BRICS leaders' annual summit in New Delhi, comes at a time when U.S. and Iran have ‌resumed tit-for-tat strikes ⁠against each other, after a pause in fighting for much of August.

The BRICS bloc includes ⁠both Iran and Washington-ally United Arab Emirates, which was expected to make clinching a joint statement consensus a particularly ​challenging task ​for host New Delhi.

"We express ​deep concern over the ‌continued escalation of tensions in Middle East...call for exercising maximum restraint...avoiding actions that could further aggravate the situation," the 'New Delhi Declaration' said.

The declaration also reiterated the commitment of member nations to a peaceful resolution of international disputes "through ‌dialogue, consultation, and diplomacy".

In addition, they ​voiced concerns about the rise ​of "unilateral tariff and non-tariff ​measures" that distort trade, against the backdrop ‌of U.S. sanctions against Tehran ​amid its war ​with the country, and against Russia over its conflict with Ukraine.

BRICS includes Brazil, Russia, India, China, South ​Africa, Egypt, Ethiopia, ‌Indonesia, Iran and the United Arab Emirates.

(Reporting by ​Hritam Mukherjee and Shilpa Jamkhandikar, writing by Sakshi ​Dayal; Editing by YP Rajesh)