Australian Prime Minister Scott Morrison has not ruled out reviewing the controversial 99-year lease of the Port of Darwin to a Chinese-backed entity. “If there is advice from the Defence Department or our security agencies that change their view about the national security implications of any piece of critical infrastructure,” Morrison told reporters. “We have legislation now which is dealing with critical infrastructure.” “You can expect me as prime minister to take that advice very seriously and act accordingly.” Morrison was in Darwin announcing a substantial $747 million upgrade to four military facilities in northern Australia. His comments echo those of Defence Minister Peter Dutton, who said on Sunday, “I think it is a question for (Foreign Minister) Marise Payne to look at these individual cases. If it is not in our national interests, then obviously she will act.” Questions have been raised over the possible cancellation of the lease …