NEW: @JoeBiden Nat'l Security Adviser @jakejsullivan thanks Trump Nat'l Security Adviser @robertcobrien for his help during a "strange & turbulent transition"
during @USIP #PassingtheBaton
during @USIP #PassingtheBaton
NEW: Trump administration warned incoming @JoeBiden administration about #China as top threa, per former Nat'l Security Adviser @robertcobrien
"We have a very assertive rising China that has become the #1 geopolitical challenge for the United States"
#PassingtheBaton
"We have a very assertive rising China that has become the #1 geopolitical challenge for the United States"
#PassingtheBaton
. @robertcobrien points to #China actions in #Taiwan, w/ #India, #SouthcChinaSea, #HongKong, #Uighurs, #Arctic #Antarctic
Chin "increasingly nationalistic" per former NSA O'Brien "We see an unrelenting global ambition"
Chin "increasingly nationalistic" per former NSA O'Brien "We see an unrelenting global ambition"
Other big worries including warnings about #Iran's malign activity, support for #alQaida and "unquenched nuclear ambition" per @robertcobrien