Terms for subject General containing in that situation

English	Russian
he felt that he was really in command of the situation	он чувствовал себя настоящим хозяином положения
in situations where that is necessary	в тех случаях, когда это необходимо (oracle.com Alex_Odeychuk)
in that situation	в такой ситуации (anyname1)
in this or that situation	при тех или иных условиях (Alexander Demidov)
the situation that is now in evidence	сложившаяся ситуация (в; in)