Singapore summoned the Indian envoy and conveyed its "strong objection" to Delhi Chief Minister Arvind Kejriwal's tweet on a "Singapore variant", the central government said today, adding that the envoy had told the country Mr Kejriwal "has no competence" on Covid variants. "The Delhi Chief Minister does not speak for India," Foreign Minister S Jaishankar said in a public snub for Mr Kejriwal, which received a "thanks" from his Singapore counterpart.