New Delhi, Aug. 6 -- US President Donald Trump has signaled that the United States may take additional steps if foreign governments retaliate against his new executive order imposing tariffs on Indian imports over the continued purchase of Russian oil.

In the executive order, Trump includes a warning in Section (b), stating:

"Should a foreign country retaliate against the United States in response to this action, I may modify this order to ensure the efficacy of the actions herein ordered."

This clause leaves open the door for further trade restrictions or sanctions, should affected nations-such as India-respond with countermeasures.

At the same time, Section (c) of the order offers the possibility of softening the measures, provided ...