The figure represents a $17.3 billion drop from the enacted level in FY 2017.
The Trump administration also requested $1.9 billion in FY 2018 information technology funds for the State Department and $141 million in IT budget for USAID.
The FY 2018 budget proposal also includes $12 billion in additional funds for overseas contingency operations, $6.9 billion for foreign affairs programs and $1.2 billion for international organizations.
The State Department would also see a $46.7 million drop in development, modernization and enhancement budget, while consular, cybersecurity and enterprise operations programs would receive funding increases under the FY 2018 budget request, Deltek noted.