There aren't "NATO payments" per se. However, it is a common defense treaty, and as such each member is expected to contribute a proportionate amount to their

There aren't "NATO payments" per se. However, it is a common defense treaty, and as such each member is expected to contribute a proportionate amount to their own military. Most recently the agreed level was 2% of GDP, which Germany has consistently fallen short of. Both Obama and Bush complained about it as well, but they both had a reasonable understanding of how things worked.