After a forgotten WW2 propaganda poster was discovered in 2000, it found an astounding new resonance in 21st-Century Britain.

Despite such a rollercoaster ride so far, market investors, in response to most developments, seem to have adopted the U.K.'s mantra as it prepared for war in 1939: Keep calm and carry on.

Polish Prime Minister Donald Tusk on Tuesday told European leaders to “KEEP CALM AND CARRY ON” amid tensions in the U.S.-Ukraine relationship “To all the European leaders: KEEP CALM AND ...

University President Christopher Eisgruber ’83 advised the campus community to “Keep Calm and Carry On” and offered other World War II-era words of advice at the Council of the Princeton University ...