Iran Vows to Continue Military Expansion Despite U.S. Threats

President Hassan Rouhani and other Iranian leaders Monday used mass celebrations of the 1979 revolution to lash out against the U.S. and reaffirm Tehran’s pledge to continue developing ballistic-missile systems that Washington says threatens the region’s security.

In the face of intensifying pressure from the U.S. and its allies to curb Tehran’s military capabilities, Mr. Rouhani told hundreds of thousands of people gathered in Tehran’s Freedom Square that Iran would “continue to pursue our path and our military power.”