US President Joe Biden will host Britain's new Prime Minister, Keir Starmer, at the White House on Wednesday, focusing on countering Iran's escalating global threats.

Key issues on the agenda include the conflicts in Ukraine and the Israel-Gaza war, with a critical focus on Iran's nuclear ambitions and destabilizing activities. Tehran's clandestine actions and refusal to fully cooperate with the International Atomic Energy Agency (IAEA) have fueled suspicions of its intent to develop nuclear weapons, potentially sparking a regional arms race.

Additionally, Iran's Houthi rebels in Yemen continues to attack commercial shipping in the Red Sea region and Saudi Arabian oil infrastructure, threatening global energy supplies and trade routes.

With the victory of Labor party in the UK, its politicians have called for tough action against the Islamic Revolutionary Guard Corps (IRGC), including its proscription. The cross-party interest in Iran over the past two years across both Houses of Parliament has been unprecedented.

Recently, over 500 MPs and Lords urged the government to proscribe the IRGC. The Labor manifesto highlights "assassination plots by the IRGC" as part of rising threats in the UK from hostile states, pledging to adapt counter-terrorism measures for state-based threats.

This includes assassination and kidnap attempts on Iran International staff, with the UK's intelligence agency, MI5, calling Iran one of the country's biggest foreign threats on its soil.

Both the new Home Secretary and Foreign Secretary previously urged amendments to the UK’s Terrorism Act 2000 to cover hostile state actors offering hope of proscription under the new government.