Complex sentence: As a major developed economy, the United States is highly dependent on the Internet and therefore greatly exposed to cyberwarfare attacks, yet at the same time has very significant capabilities in both defense and power projection thanks to its advanced technology and large military budget.
Split into simpler sentences: As a major developed economy, the United States is highly dependent on the Internet and therefore greatly exposed to cyberwarfare attacks. At the same time, the United States has substantial capabilities in both defense and power projection thanks to its advanced technology and large military budget.