Prime Minister Sir Keir Starmer defended signing a G7 statement on Wednesday that praised President Donald Trump for brokering a U.S.-Iran peace deal [1].

The agreement represents a significant diplomatic shift that could end years of conflict between the two nations and stabilize global energy markets.

Starmer said the deal is "a good thing and an opportunity for a new chapter" [2]. He said the agreement was an "important breakthrough for peace in the Middle East" [3]. The prime minister said he wanted to acknowledge the "strong leadership" Trump provided to achieve the result [4].

A total of seven G7 leaders signed the joint statement released on June 17, 2026 [5]. The document highlights the role of the U.S. administration in facilitating the peace process and ending hostilities with Iran [1].

President Trump said the economic implications of the agreement mean oil will flow freely once again through the Strait of Hormuz [6]. The deal aims to restore stability to the region and prevent further escalation of war between the U.S. and Iran [4].

Starmer's support for the statement comes amid a broader effort by G7 members to coordinate a unified response to Middle East instability. By signing the document, the UK aligns itself with the U.S. approach to Iranian diplomacy, a move that emphasizes the potential for a new era of cooperation over confrontation [1].

"The deal is a good thing and an opportunity for a new chapter."

The alignment between the UK and the U.S. on this deal suggests a strategic pivot toward stability in the Persian Gulf. By endorsing Trump's leadership in the agreement, Starmer is prioritizing regional security and the uninterrupted flow of oil over previous diplomatic frictions, signaling a pragmatic approach to the U.S.-Iran relationship.