* Turkey threatens to block Finland and Sweden from joining NATO
* Former Fed Chair Bernanke sees stagflation risk rising for US
* Food-supply chains in focus after India bans wheat exports
* US gasoline prices may soon reach $5 a gallon, energy analyst predicts
* Buffett’s Berkshire Hathaway loads up on energy stocks as inflation soars
* Strong US dollar raises headwinds for emerging markets, analyst advises
* US officials announce plans to ease tough sanctions imposed on Cuba
* NY Fed Mfg Index shows sector activity contracts in May: