Produce a sentence which has a cefr level of "a1" and keywords: kissinger, safe, limited, second, offensive.
Initially, Kissinger recommended a safe but limited second offensive into Cambodia, but Haig, in Saigon in December to look into the possibilities, reported that Abrams, Thieu, and Bunker favored a much bolder effort, aimed at cutting the trail at its northern end, near or alongside the demilitarized zone.