UK sanctions Russia's central bank Governor Nabiullina
By William James & Muvija M
Putin proclaims annexation of four Ukrainian regions
By Adam Taylor, Mary Ilyushina & Natalia Abbakumova
U.S. announces new sanctions on Russia in response to Ukraine annexation
By Christina Wilkie & Amanda Macias
US sanctions Russia as Putin annexes parts of Ukraine
By Evan Simko-Bednarski
U.S. issues new Russia sanctions for annexations in Ukraine; targets firms, lawmakers
By Daphne Psaledakis & Steve Holland