According to him, Biden will discuss the new concept, taking into account the challenges facing the alliance.
Also, the US President intends to discuss the topic of cybersecurity.
"He will discuss [the topic] cyberspace as an increasingly important dimension of NATO's work," Sullivan was quoted as saying by TASS.
He added that the alliance at the summit will endorse a cybersecurity strategy for the first time in seven years.
Earlier, Jay Sullivan said that NATO will change its strategic concept, in which Russia is defined as a "constructive partner."