to stay calm under stress or provocation
оставаться спокойным под давлением или провокацией (ostavat'sya spokoynym pod davleniem ili provokatsiey)
"Even in emergencies, he always keeps his cool."
"Даже в экстренных ситуациях он всегда сохраняет спокойствие." (Dazhe v ekstrennykh situatsiyakh on vsegda sokhranyaet spokoystvie.)
to be in a stressful situation with a lot of demands
to generate many creative ideas in a group discussion
to establish a standard or example for future actions
to feel very nervous about something
the overall perspective or situation
to return to the right path after a mistake or setback