WASHINGTON: President Donald Trump is due to meet Friday afternoon with China´s top trade negotiator, as talks continue to try to defuse the escalation of the tariff war between the world´s economic superpowers.Global stock markets were higher as the two sides continued to project optimism, with Trump´s personal involvement a likely signal of the White House´s confidence in a successful outcome.Just a week remains to avoid a sharp increase in US duty rates on more than $200 billion in...