Finance Secretary Shona Robison unveils the government's tax and spending plans for the coming financial year.
The new body is part of the White House's 20-point plan to end the war between Israel and Hamas.
All three are members of Lighthouse, a group investigated for a BBC documentary and podcast in 2023
Foreign Secretary Yvette Cooper also says the government will implement "full and further sanctions" against Iran.
Previous plans for a high-speed rail line between the cities were scrapped by Rishi Sunak's government.