Amazon.com Inc. has abandoned its planned $1.4 billion acquisition of Roomba maker iRobot Corp. after clashing with European Union regulators who had threatened to block the deal.

Amazon Drops $1.4 Billion iRobot Deal; Vacuum Maker Cuts Jobs::Amazon.com Inc. has abandoned its planned $1.4 billion acquisition of Roomba maker iRobot Corp. after clashing with European Union regulators who had threatened to block the deal.