The US, France and Britain launched 105 missiles targeting what the Pentagon said were three chemical weapons facilities in Syria in retaliation for a suspected poison gas attack.
There were concerns about how Russia might react and while Russian President Vladimir Putin warned that further Western attacks would bring chaos to world affairs, the reaction was viewed as muted.
Putin's reaction seemed more like "posturing", said Fat Prophets in a note. The spot gold price, which usually gains when investors seek safe-haven assets, edged up 0.1 per cent to US$1,345.70 an ounce.
"I would have thought we might have seen a bit more risk off on the open today, but it hasn't been the case. We've been contained in very tight ranges," said Mark Johnson, a senior dealer at OMF.
He noted that US equity futures were currently positive, which was also helping risk appetite.
Investors are gearing up for US corporate earnings with analysts expecting quarterly profit for S&P 500 companies to rise 18.5 per cent from a year ago, the biggest gain in seven years, according to Reuters.
Domestically the market will be watching for this week's inflation data with economists expecting annual inflation of 1.1 per cent and the tepid data will add to the view the central bank will keep rates on hold for the foreseeable future.
"I can't see any reason for any hawkish overtones from the central bank," Johnson said.
He said, however, the main driver of the kiwi will remain offshore.
"Geopolitics are dominating for the moment, it's the US every which way, whether it's the US and China, the US and Russia and the US and Syria," he said
The Kiwi dollar decreased to A94.61c from A94.72c in New York on Friday and traded at 78.86 yen from 78.97 yen. It slipped to 59.63 euro cents from 59.69 euro cents and traded at 51.58p from 51.67p. It increased to 4.6207 yuan from 4.6166 yuan on Friday.
New Zealand's two-year swap rate lifted 1 basis point to 2.31 per cent and the 10-year swap rate rose 3 basis points to 3.18 per cent.