While there are crucial differences between jihadis and white supremacy extremists, there are also important similarities, including: the utility and cycle of violence; use of the internet; propaganda; recruitment; financing; and especially, the transnational nature of the networks. 17,000 foreigners from 50 countries, including the U.S., have gone to fight in Ukraine, including with the Azov Battalion. Two of the most prominent U.S.-based white supremacy extremist groups, Atomwaffen Division and the Rise Above Movement (R.A.M.) count Afghan and Iraq veterans as members. R.A.M. members have traveled overseas to Germany, Ukraine, and Italy to celebrate Adolf Hitler’s birthday and forge stronger organizational links with white supremacy extremists based in Europe. White supremacists are forming global networks, much as jihadis did prior to 9/11, and are learning from jihadi tactics. Supremacists warn of a ‘great replacement’ of whites, while jihadis talk of a ‘war against Islam’; jihadis make martyrdom videos, WSEs post online manifestos. In describing their mission, white supremacists have used the term ‘white jihad’ and one neo-Nazi group recently adopted the name ‘the Base,’ which translated into Arabic is ‘al-Qaeda.’ Moreover, both groups recruit followers and reinforce their message through social media, with a focus on purification through violence.