What is the best government policy to follow at this time?

The Lubavitcher Rebbe explained that the best government policy is to promote the Noahide Code:

When seeking ways to assist countries suffering from famine, [etc.,] or to prevent war, the way to accomplish this [through government policy] is to promote observance of the Noahide Code.  This will bring us to merit an enduring, civilized world. In fact, observing this code nowadays will bring us the privilege of witnessing the [Messianic] era. Rambam speaks about this as “that time.”[2]

This indicates that although it will be limited by the boundaries of time, it will be “that time” – the Messianic Era… “In that time there will be neither famine or war, envy or competition. [Good will flow in abundance, and all the delights will be freely available as dust.] The occupation of the entire world will be solely to know G-d… [As Isaiah 11:9 states: ‘The world will be filled with the knowledge of G-d as the waters cover the ocean bed.’]”[2]

What makes a government policy truly good?

We also find Gentiles included at the outset of Mishneh Torah. How so? The very first precept speaks directly about the fundamental basis of true wisdom for all human beings:

“The foundation of all foundations and the pillar of wisdom is to know that there is a Primary Being who brought into being all existence: all the beings of the heavens, the earth, and what is between them…”[3]

Clearly, this pertains not only to Jews, but to all Gentiles as well. History proves that Gentile societies do not endure if their governmental policies are devoid of these eternal principles.

Footnotes:
[1] See the book To Perfect the World: The Lubavitcher Rebbe’s Call to Teach the Noahide Code to All Mankind (translated from Hisvaaduyos 5745, Vol. 3, pp. 1713-1716).
[2] Maimonides (Rambam), Mishneh Torah, Laws of Kings 12:5.
[3] Ibid., Laws of the Foundations of the Torah 1:1.