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Hamilton questioned the strategy of taking Formula One to places like India, Korea and Turkey where the sport did not survive for long.
F1 race director Charlie Whiting told reporters earlier this month that he had visited the site in Hanoi and was confident the circuit would be ready in time for the 2020 season.
Hamilton now leads Vettel by 70 points and with 75 remaining in the final three races he can clinch his fifth title by finishing seventh in Mexico, if Vettel wins.
The Austrian boss told reporters late Saturday in Texas that he did not have a pre-meditated plan for the race in which four-time champion Hamilton needs to outscore Sebastian Vettel by eight points.
Russell is the reserve driver for Lewis Hamilton's Mercedes team this year and is on the brink of securing the Formula Two championship, the feeder series to F1.
The agency said the incident in May occurred when Raikkonen veered to avoid an oncoming vehicle and collided with a car parked to his right.
The Super Formula series in Japan, that Narain has been in for the past four years, features races in some extreme conditions.
Sebastian Vettel was hardly a jovial figure when he arrived in Singapore, but he was incandescent after Ferrari's weekend unravelled.
Reflecting on his position in Ferrari, Leclerc hoped that the team would allow him to race German driver Sebastian Vettel.
Leclerc has had a promising start to his rookie season, finishing sixth at the Azerbaijan Grand Prix, with 16 points from 14 races.
The four-time champion German admitted that he felt he and his team had let down Ferrari's passionate tifosi by failing to win after locking out the front row of the grid.
Force India already use Mercedes engines, as do former champions Williams whose Canadian driver Lance Stroll looks set to switch to Force India.
The two-time world champion is claimed to have turned down an offer from Red Bull before announcing his F1 exit.
Alonso, whose best finish for McLaren so far was 10th in 2016, said he would carry on endeavouring to finish with a flourish.
Ricciardo is fifth in the 2018 drivers' standings and has won in China and Monaco this season, two of his seven Grand Prix victories.