The D Brief

Welcome to this Monday edition of The D Brief, a newsletter dedicated to developments affecting the future of U.S. national security.

In this week's issue:

China is upgrading its counter-drone capabilities aggressively and adopting a multi-layered defense approach that integrates electronic warfare, directed-energy weapons, and AI-driven interception systems.

The U.S. could respond in-kind to cyberattacks from China and other adversaries that have targeted various critical infrastructure systems across the nation.

The Trump administration's Signal clone app was hacked, and Ukraine has achieved a new first in naval warfare, shooting down two Russian jets using U.S.-made Sidewinder missiles.

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