τοῦ δὲ πολέμου οἱ καιροὶ οὐ μενετοί → in war, opportunities won't wait | the chances of war will not wait (Thucydides 1.142.2)
adverb from πρόσφατος; recently: lately.
adverb (see the preceding word), lately: Polybius, Alciphron, others.)