Foreign secretary Harsh Vardhan Shringla and US Charge d'Affaires here Atul Keshap on Monday discussed the Covid-19 pandemic, bilateral relations and regional issues, as they agreed to maintain the momentum of engagement in these difficult times.Foreign secretary Harsh Vardhan Shringla and US Charge d'Affaires here Atul Keshap on Monday discussed the Covid-19 pandemic, bilateral relations and regional issues, as they agreed to maintain the momentum of engagement in these difficult times.