Greens Leader Christine Milne says it's no surprise that Australian officials have been instructed to try to protect fossil fuel subsidies at the OECD.

"The Abbott government is a wholly owned subsidiary of the coal industry. There's no other way of looking at it," said Senator Milne.

"Anyone who was unsure if the government's attack on the Renewable Energy Target was anything other than attempt to prop up coal would now be in no doubt.

Tony Abbott's Cabinet is expected to make a formal decision to sign Australia up to the new Asia Infrastructure Investment Bank on Monday, but the Greens say tighter environmental and human rights standards must be agreed to first.

"Cabinet should not commit to joining the new bank until tighter environmental and human rights standards have been agreed to," said Greens Leader Christine Milne.

The Australian Greens today join the community in honouring the service of the men and women who served in Afghanistan as part of Operation Slipper and welcome them home.

"Around Australia today people have come together to say thank you to all those who put their lives on the line in Afghanistan, and to honour their service, and I join them," said Greens Leader Christine Milne.

The Australian Greens Leader, Senator Christine Milne, moves a Senate motion calling on the government to support legislation that enables the Parliament to decide when Australian troops are deployed overseas.

Greens Leader Christine Milne talks with Walter Williams on 2UE, 4BC and radio stations along the east coast about Liberal and Labor combining to deny the Parliament a debate on sending more troops to Iraq, leaving it to Tony Abbott to make another captain's call.

Liberal and Labor combined today to deny the Parliament a debate on sending more troops to Iraq, leaving it to Tony Abbott to make another captain's call, said Greens Leader Christine Milne.

"Prime Minister Abbott has made another ill-advised captain's call, deploying more Australian troops to Iraq without reference to the Australian Parliament or the Australian people," said Senator Milne.

"Mr Abbott backs himself with a row of flags, but he doesn't have enough respect for the community to seek the backing of their elected representatives.