* Cornavirus variants threaten global economic recovery, says Treasury Sec. Yellen
* Biden Administration faces tough choices Haiti’s request for US troops
* Cuba sees biggest protests in decades as economy struggles
* Parts of US West continue to suffer from heat wave
* US reaffirms commitment to defend Philippines from attack in South China Sea
* G20 finance ministers set to surge in upcoming reports for second quarter
* China seeks more control over its overseas tech sector
* Policy-sensitive 2-year Treasury yield near 15-month high: