tightening the belt is a very vague prescription.
in most cases it means austerity, which means screwing the working class.
This didnt work in the GB, its failed in Kansas, its a flop in Greece, and it has not worked anywhere else its been tried.
If by "tighten the belt" you mean tax the wealthy more, make the tax system more transparent and efficient, encourage job producing business instead of financial shell games by hedge funds, sure- I am with you.
In the 11 years I have owned property here, I have seen bureaucracy lessen, corruption decrease, and significant infrastructure improvements- which the UK and the USA are unable to do.
I would suggest that, rather than taxing exports, the government encourage them. I would suggest streamlining the ridiculous export duty and customs systems, which add between 10% and 100% "friction" to exports.
Argentina has a lot of viable exports- the shoe industry, along with textiles and clothing, a wide variety of metalworking, including agricultural equipment, tools, hardware, along with furniture, jewelry, and culture- film, music, theater, dance, etc.
In every case, the government impedes exports of these things.
I know people in many different fields who have told me first person stories (anecdotes, yes, but true ones by people in the fields) of how ridiculously hard it is to send a performing arts troupe abroad, to export argentine made products, to travel to international trade shows, and so on.
The country needs jobs, tax income, positive foreign exchange flows, and healthy local manufacturing.
Most european countries,and, even the feeble USA, have government agencies that help local exporters. The Argentine government actively hinders.
Also, we need a middle ground between 100% duties on imports, or the replacement value in exports rule, that we had under K, and the open market to importing chinese trash that Macri wants.
Complete open borders will decimate argentine industry and jobs- we will end up like Uruguay, where everything for sale is Chinese, and all they sell is money laundering and tourism.
Complete isolationism is not workable.
A balance that supports the local industries with targeted tariffs, while allowing things like Iphones and laptops in, which Argentina does not and will not manufacture, with some tariffs, is what is needed.
In other words, a middle ground.