“Taiwan needs to start looking at some asymmetric and anti-access area denial strategies and really fortify itself in a manner that would deter the Chinese from any sort of amphibious invasion or even a gray zone operation against them.”

American attorney and national security adviser

Robert Charles O'Brien Jr. is an American attorney and policy adviser, best known for serving as the 27th United States national security adviser from 2019 to 2021. He was the fourth and final person to hold that post in Donald Trump’s first presidency. O'Brien later became chairman of the consulting firm American Global Strategies. His public profile is rooted in national security and foreign policy work, especially in senior government service and strategic advisory roles.