"The united action we are now taking is limited and proportionate. It is not about intervening in a civil war, not about regime change, nor about frustrating Russian strategic objectives in Syria," Williamson told the Sunday Times newspaper.
Williamson, however, noted that a political solution is the only way to resolve the Syrian conflict.
"Ultimately, a political solution will be the only way to resolve a seven-year conflict that has cost hundreds of thousands of lives. Britain, with the United States, has been at the forefront of diplomatic efforts. We continue pressing for a peaceful settlement and calling on the Kremlin to be part of the solution, not the problem," Williamson added.
According to the Russian Defense Ministry, the three countries fired over 100 cruise and air-to-surface missiles, most of which were shot down by Syrian air defense. According to Damascus, which has repeatedly said it had eliminated its chemical weapons stockpiles, the attack damaged Syrian infrastructure, and left three civilians injured.
Russian President Vladimir Putin stated on Saturday that the strikes had been carried out in violation of norms and principles of the international law.