National Security Advisor John Bolton said the country’s “first fully articulated cyber strategy in 15 years” was now in effect.

The new more aggressive posture follows a decision by President Donald Trump to revoke rules established by his predecessor Barack Obama to require high-level authority for any big military cyber operations.

“Our hands are not tied as they were in the Obama administration,” Bolton said.

“For any nation that’s taking cyber activity against the United States, they should expect… we will respond offensively, as well as defensively,” Bolton said.