In April-July, the first four months of this fiscal year, India's oil imports from Iran has risen by an annual 40 percent to about 677,500 bpd, the data showed. They have also expressed concern about keeping open the waterways off Yemen where Iranian-backed rebels have attacked oil tankers.
The nuclear deal lifted worldwide sanctions in return for Iran limiting its nuclear program and allowing regular inspections.
The US is now also pushing Pyongyang to scrap its nuclear capabilities after President Donald Trump and North Korea's leader Kim Jong Un agreed a vague commitment to "denuclearisation of the Korean Peninsula" at their landmark summit in June.
In a statement, Captain Bill Urban, the military's Central Command spokesman, said the United States was "aware of an increase" in Iranian naval operations in the Gulf, the Strait of Hormuz and the Gulf of Oman.
20 killed when tourist plane crashes in Swiss Alps
The plane, which was built in Germany in 1939, crashed into the Piz Segnas mountain around 2,450 metres (8,000ft) above sea level. Initial investigation showed the plane did not lose any parts or break up before it crashed in the Swiss Alps.
Teams of USA officials have been visiting capitals around the world to try to choke off sales of Iranian oil by early November, when US sanctions are due to snap back into effect.
The controversial move was preceded by a deadly crush of Hajj pilgrims in September 2015, which killed more than 460 Iranians.
The Iranian riyal is down 25% against the dollar. Hormuz is the place they can transfer that pain to the rest of the world.
Outrage by Iran's leaders when Trump took the decision in May is now being supercharged by small street protests against the government over the economy and the threat of more as the situation worsens.
Hazard asks to delay return to Chelsea
City will be eager to kick off the season from where they left the previous one, with an easy win over the rivals. Whether Sergio Aguero starts or not is debatable but he'll be well worth backing to score if he does.
A second wave of sanctions will be re-imposed in November that target Iran's energy and banking sectors. The sanctions targeting Iran's oil industry could cut off a crucial source of hard currency.
Another expert who foresees tightening was far more outspoken in his short-term forecast: Stephen Brennock, oil analyst at PVM Oil Associates, stated in a note on Friday that "Venezuela's ticking time bomb together with the return of Iran's oil industry to the sanctions era has all the makings for a major supply shock".
Iran's navy and its paramilitary Revolutionary Guard routinely conduct seaborne exercises in the Gulf and the strait.
The U.S., which withdrew from the nuclear deal in May, will re-impose some sanctions on Iran starting Monday. The waterway separating Iran and Oman hosts about 20 percent of the global trade in oil. He did not elaborate.
Number confirmed (sort of) for Liverpool goalkeeper Alisson
The Brazil worldwide is set to make his debut in Liverpool's next pre-season fixture against Napoli on Saturday. Liverpool's final pre-season friendly will also be against a Serie A side, Torino, on August 7.