Carney taking a 'cautious' position in comments about sending troops to Ukraine
(www.nationalobserver.com)
Ironically, Ukraine used to have quite a few nuclear warheads (Soviet leftovers like Russia's). They were removed and disassembled in the 1990s, and Ukraine is a signatory to the major nuclear non-proliferation treaties. If someone (the US? France?) offered them new warheads now, I don't know what their decision would be.