Infiltrating a military fortress in space might have been difficult, but for those truly capable, with the assistance of suitable equipment, it was no problem. If they wanted to investigate Axis, simply having the Frontier circle around at a distance beyond Axis's detection range would have been useless. Only by personally sending people into Axis, like at the beginning of Gundam SEED, could they learn the intelligence they wanted.
Therefore, Cruze planned to personally infiltrate Axis and investigate. He would see whether the World Intruder had truly been acquired by Axis as Xiao Ran had said, or perhaps had joined Axis instead. He would also determine exactly what the World Intruder was and what level of enemy it represented. Once they had gathered detailed intelligence, they would launch an attack on Axis as the situation warranted.
Of course, rashly entering Axis before knowing more about its internal situation was not a wise move. That was why Cruze asked Char whether he could obtain the cooperation of the people he had planted there. Yet even Char did not dare guarantee it absolutely. Those people might once have been trustworthy, but after being cut off from Axis for so long, who knew whether something had happened in the meantime? His contacts might be dead, unable to send messages, or might have simply surrendered to Kycilia and Garma. Without certainty, contacting people recklessly on someone else's turf might mean falling into an encirclement the moment they met.
The reason Cruze asked was to learn from Char's answer whether he still had even a little influence in Axis and whether they could obtain even the slightest bit of intelligence from within. But after seeing Char's expression, he understood that this operation would have no inside contacts. Everything would have to rely on their own