At an address given to the Royal United Services Institute (RUSI) in London, Williamson said Britain was the second largest investor in the region and it must display "hard power" and "lethality" to help protect interests.
Campaign Against Arms Trade has responded to a speech "Defence in Global Britain" by the Secretary of State for Defence, Gavin Williamson in which he spoke about the need for "hard power to support our global interests" and increased "lethality".
To increase the ability to resist those who despise global law, the defense secretary proposed plans to modernize and boost combat capability of the British armed forces, including investment in the Royal fleet and rapid reaction forces, cyber forces, as well as "swarm squadrons" of drones, aimed to to overwhelm enemy air defenses.
The defence secretary won an extra £1.8bn for defence in the last budget.
Britain must be ready to use "hard power" against Russian Federation and China, defense chief Gavin Williamson said as London prepares to deploy its largest warship into contested Pacific waters. "Such action from Russian Federation must come at a cost", the Minister said.
He will claim that the cost of non-interventions has often been "unacceptably high" and argue that Western powers can not ignore those in need as "to talk but fail to act risks our nation being seen as little more than a paper tiger".
"Instead of simply engaging in yet more sabre-rattling, Gavin Williamson should get to grips with the crisis in defence funding that is happening on his watch".