The Congressional Budget Office said its analysis had been limited by the fact that the Defense Department did not respond to requests for information on the costs of the conflict. President Donald Trump’s decision to go to war against Iran has cost US taxpayers about $38 billion in direct costs during the first five months of fighting and will push inflation up about 0.5 percentage points by early next year, a new congressional study finds. Key points and original sources are listed below.

• The Congressional Budget Office said its analysis had been limited by the fact that the Defense Department did not respond to requests for information on the costs of the conflict.S1

• President Donald Trump’s decision to go to war against Iran has cost US taxpayers about $38 billion in direct costs during the first five months of fighting and will push inflation up about 0.5 percentage points by early next year, a new congressional study fi...S2