Mbalula refused to respond when probed about the tweet on Monday, but denied he was trivialising the conflict.
“I am not going to comment on that,” he told a reporter during a visit to driving licence testing centres in Gauteng.
“I did not trivialise anything and I won’t comment on that.”
Mbalula's tweet came after the government abstained from voting on a UN resolution to reprimand Russia’s invasion of Ukraine.
In his weekly newsletter, President Cyril Ramaphosa dismissed claims that SA was condoning Russia’s invasion of Ukraine.
“There have been some who have said that in abstaining from the vote, SA has placed itself on the wrong side of history.
“Yet, SA is firmly on the side of peace at a time when another war is something the world does not need, nor can it afford. The results of these hostilities will be felt globally and for many years to come,” said the president.
He said violence should not be an option when the matter can be resolved amicably through mediation.
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