The US decision to send anti-personnel landmines to Ukraine -- in a major policy shift -- was triggered by a change in Russian battlefield tactics favoring infantry over mechanized units, US Defense Secretary Loyd Austin said Wednesday.
"They don't lead with their mechanized forces anymore," Austin told reporters while on a visit to Laos. "They lead with dismounted forces who are able to close and do things to kind of pave the way for mechanized forces."
