Just one-third of the public believes President Donald Trump has a clear plan to handle the situation in Iran, according to a new CNN poll conducted by SSRS, underscoring the deep skepticism ahead of his Wednesday night White House address on the war.

Americans’ already broad disapproval of US military action in Iran has grown since the start of the war, the poll found. Just 34% of Americans now say they approve at least somewhat of the US decision to take military action in Iran, down 7 points from a CNN poll conducted just after the start of the war.

The CNN poll was conducted by SSRS online and by phone from March 26-30 among a random national sample of 1,201 adults. Results for the full sample have a margin of sampling error of plus or minus 3.2 percentage points.