• Asia stocks struggled on Tuesday as a fresh round of U.S.-China tariffs and a surge in oil prices to near four-year highs added to worries about risks to global growth.

MSCI's broadest index of Asia-Pacific shares outside Japan .MIAPJ0000PUS edged down 0.15 percent. But Japan's Nikkei .N225 bucked the trend and edged up nearly 0.2 percent.

• Japan’s Nikkei rose for a seventh session on Tuesday helped by gains in chip-related stocks that offset weakness in construction equipment manufacturers, which fell on worries that a new round of U.S.-China trade tariffs could hurt global demand.

Investors returned to the market after a national holiday on Monday.

The Nikkei share average gained 0.3 percent to 23,940.26, rising for the seventh straight session. The benchmark index hit its highest in more than eight months after rising U.S. yields pushed up financial stocks while the weak yen supported overall sentiment.

Market analysts said that investors are monitoring the outcome of trade talks between Japan and the United States this week.