Interesting question -- the enemy without or the enemy within?
I'd say equally dangerous, though in vastly different ways.
The enemy without: Vlad the Invader, representing today's incarnation of ancient empire builders -- who major and minor wars of the 20th century were fought to defeat, at the total cost of over 200 million deaths.
These we believed were finally defeated in 1991, when the Old Soviet Union fell and philosopher Francis Fukuyama announced, "The End of History".
Today it seems that the announced death of history was just a bit premature, and Vlad the Invader looks determined to resurrect history with a vengeance.
Already we've seen more deaths in Vlad's invasion of Ukraine than in any European war since Uncle Joe Stalin ruled in Moscow.
The enemy within: Democrat Pres. O'Biden, representing radical Obama's third term, transforming America as promised from the greatest land of the free, home of the brave into a third world socialist hell-hole.
The resulting death-toll from drugs crossing our open borders alone is said to be circa 100,000 Americans per year, thus matching deaths on either side in Ukraine.
Defeating the enemy without requires a plan, a strategy and effective military support to Ukrainians and others battling Old-Time Empire builders.
Defeating the enemy within requires a plan, a strategy and effective political support to our own good guys battling Old-Time Socialist-Democrat constitution destroyers.